Swift observations of IBL and LBL objects

@article{Massaro2009SwiftOO,
  title={Swift observations of IBL and LBL objects},
  author={Francesco Massaro and Paolo Giommi and Gino Tosti and Arianna Cassetti and Roberto Nesci and Matteo Perri and David N. Burrows and N. Gerehls},
  journal={arXiv: High Energy Astrophysical Phenomena},
  year={2009}
}
BL Lacs are an enigmatic class of active galactic nuclei (AGNs), characterized by the non-thermal continuum typically attributed to synchrotron and inverse Compton emission. Depending on the frequency location of the maxima of these components, they are subdivided into three subclasses LBLs, IBLs, and HBLs. We present the results of a set of observations of eight BL Lac objects of LBL and IBL type performed by the XRT and UVOT detectors onboard the Swift satellite between January 2005 and… 

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References

SHOWING 1-10 OF 53 REFERENCES
SWIFT observations of TeV BL Lacertae objects
Context. We present the results of a set of observations of nine TeV detected BL Lac objects performed by the XRT and UVOT detectors on board the Swift satellite between March and December 2005.
X-ray spectral evolution of TeV BL Lacertae objects : eleven years of observations with BeppoSAX, XMM-Newton and Swift satellites
Context. Many of the extragalactic sources detected in γ rays at TeV energies are BL Lac objects. In particular, they belong to the subclass of "high frequency peaked BL Lacs" (HBLs), as their
Log-parabolic spectra and particle acceleration in blazars. II. The BeppoSAX wide band X-ray spectra of Mkn 501
We present the results of a spectral and temporal study of the complete set of BeppoSAX NFI (11) and WFC (71) observations of the BL Lac object Mkn 501. The WFC 2-28 keV data, reported here for the
Spectral energy distributions of a large sample of BL Lacertae objects
We have collected a large amount of multifrequency data for the objects in the Metsahovi Radio Observatory BL Lacertae sample and computed their spectral energy distributions (SED) in the logν - log
Swift and infra-red observations of the blazar 3C 454.3 during the giant X-ray flare of May 2005
We present the results of a series of Swift and quasi simultaneous ground-based infra-red observations of the blazar 3C 454.3 carried out in April-May 2005 when the source was 10 to 30 times brighter
XMM-Newton observations of a sample of γ-ray loud active galactic nuclei
Aims. To understand the nature of γ-ray loud active galactic nuclei (AGN) and the mechanisms for the generation of high-energy γ-rays. Methods. We performed a homogeneous and systematic analysis of
INTEGRAL observations of the field of the BL Lacertae object S5 0716+714
We have performed observations of the blazar S5 0716+714 with INTEGRAL on 2-6 April 2004. In the first months of 2004, the source had increased steadily in optical brightness and had undergone two
The BL lacertae objects OQ 530 and S5 0716+714 simultaneous observations in the X-rays, radio, optical and TeV bands
INAF – Osservatorio Astronomico di Brera, Via Brera 28, I-20121 Milano, ItalyReceived October 2002Abstract. We present the results of the BeppoSAX observations of two BL Lacs, OQ530 and S50716+714,
Multifrequency observations of the BL Lacertae object PKS 0537-441.
PKS 0537 - 441 was repeatedly observed in the UV band with the International Ultraviolet Explorer and in the X-ray with the Einstein Observatory. On September 27, 1980, simultaneous observations in
Intermediate BL Lac objects
The 200-mJy sample, defined by Marcha et al., contains about 60 nearby, northern, flat-spectrum radio sources. In particular, the sample has proved effective at finding nearby radio-selected BL Lac
...
1
2
3
4
5
...